Post navigation

Humidex Calculator using Arduino

Given the high cost of running air conditioners, was kicking around the idea of being able to automatically determine when is the right time to use a desert cooler (aka evaporative cooler or swamp cooler) vs an air conditioner. Can across some papers on Humidex / Heat Index which could be used to determine the same, therefore decided to implement a Humidex Calculator using Arduino.

First some theory about Humidex :-

The humidex is an index number used to describe how hot the weather feels to the average person, by combining the effect of heat and humidity. The humidex is a unit-less number based on the dew point, but it is equivalent to dry temperature in degrees Celsius. For example, if the temperature is 30 °C (86 °F), and the calculated humidex is 40, then it indicates the humid heat feels approximately like a dry temperature of 40 °C (104 °F).

According to the Meteorological Service of Canada, a humidex of at least 30 causes “some discomfort”, at least 40 causes “great discomfort” and above 45 is “dangerous”.

Now the code based on DH11 humidity sensor and the BMP085 temperature sensor. The key value pair are output to the serial port where a java program parses and submits them to a Mango M2M datalogger running on the local machine.

2 thoughts on “Humidex Calculator using Arduino”

It’s hard to find your website in google. I found it on 20 spot, you
should build quality backlinks , it will help you to increase traffic.
I know how to help you, just search in google – k2 seo tricks

I see a lot of interesting articles on your website. You
have to spend a lot of time writing, i know how to save you a lot of work,
there is a tool that creates unique, SEO friendly articles in couple of minutes,
just type in google – k2 unlimited content